Serial port problem???
Posted: 8. Jan 2010, 19:14
I have a weather station attached to a Windows XP VM running on a Fedora 12 host. The weather station hardware uses a Serial-to-USB adapter because it only has a serial connection and my PC doesn't. I have the driver for the thing installed on XP.
Under normal operations it works fine. The software for the weather station grabs data every couple seconds or so just fine. The problem is when I have the VM turned off or the weather station software not running. The weather station stores data internally when there is no software pulling it off. When I first start up the software, it tries pulling down any data that is stored on the weather station to update its graphs and such. When it tries this, it usually manages to grab a couple pieces of data and then just stops and eventually times out and goes into regular operation where it pulls down live data, thereby losing any data between the time I shut down the weather station software and when it was restarted.
I'm not sure how to debug this problem. The data rate is 9600 baud on the virtual serial port and the weather station.
Under normal operations it works fine. The software for the weather station grabs data every couple seconds or so just fine. The problem is when I have the VM turned off or the weather station software not running. The weather station stores data internally when there is no software pulling it off. When I first start up the software, it tries pulling down any data that is stored on the weather station to update its graphs and such. When it tries this, it usually manages to grab a couple pieces of data and then just stops and eventually times out and goes into regular operation where it pulls down live data, thereby losing any data between the time I shut down the weather station software and when it was restarted.
I'm not sure how to debug this problem. The data rate is 9600 baud on the virtual serial port and the weather station.